package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.BitSet;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对

        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     *新增员工
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
            //这里用entity类 接受对象 这个类对应数据库表字段
        Employee employee = new Employee();
        //这里直接调用工具类 将 employeeLoginDTO 拷贝到employee
        BeanUtils.copyProperties(employeeDTO,employee);
        //默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
//        //设置创建时间和修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
        //设置状态 默认 1  1 为启用 0 为禁用
        employee.setStatus(StatusConstant.ENABLE);
//        //设置修改操作人 和创建操作人
//        employee.setUpdateUser(BaseContext.getCurrentId());
//        employee.setCreateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
    }

    /**
     * 员工分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult<Employee> pagerQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        //用page（Employee类型）集合 来封装查询的结果
        Page<Employee> page =  employeeMapper.pageQuery(employeePageQueryDTO);
        long total = page.getTotal();//获取总记录数
        List<Employee> result = page.getResult();//获取查询结果
        return new PageResult<Employee>(total,result);

    }

    /**
     * 启用禁用员工参数
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        //创建对象
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .build();
        employeeMapper.startOrStop(employee);

    }

    /**
     * 根据员工id 查询员工信息
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
     Employee employee =  employeeMapper.getById(id);
     employee.setPassword("*****");
      return employee;
    }

    @Override
    public void updateEmp(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);//拷贝属性
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.startOrStop(employee);

    }


}
